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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 4118 | */ |
| 4119 | function get_ancestors( $object_id = 0, $object_type = '', $resource_type = '' ) { |
| 4120 | $object_id = (int) $object_id; |
| 4121 | |
| 4122 | $ancestors = array(); |
| 4123 | |
| 4124 | if ( empty( $object_id ) ) { |
| 4125 | |
| 4126 | /** This filter is documented in wp-includes/taxonomy.php */ |
| 4127 | return apply_filters( 'get_ancestors', $ancestors, $object_id, $object_type, $resource_type ); |
| 4128 | } |
| 4129 | |
| 4130 | if ( ! $resource_type ) { |
| 4131 | if ( is_taxonomy_hierarchical( $object_type ) ) { |
| 4132 | $resource_type = 'taxonomy'; |
| 4133 | } elseif ( post_type_exists( $object_type ) ) { |
| 4134 | $resource_type = 'post_type'; |
| 4135 | } |
| 4136 | } |
| Line | Code |
| 4150 | * |
| 4151 | * @since 3.1.0 |
| 4152 | * @since 4.1.1 Introduced the `$resource_type` parameter. |
| 4153 | * |
| 4154 | * @param array $ancestors An array of object ancestors. |
| 4155 | * @param int $object_id Object ID. |
| 4156 | * @param string $object_type Type of object. |
| 4157 | * @param string $resource_type Type of resource $object_type is. |
| 4158 | */ |
| 4159 | return apply_filters( 'get_ancestors', $ancestors, $object_id, $object_type, $resource_type ); |
| 4160 | } |
| 4161 | |
| 4162 | /** |
| 4163 | * Returns the term's parent's term_ID. |
| 4164 | * |
| 4165 | * @since 3.1.0 |
| 4166 | * |
| 4167 | * @param int $term_id Term ID. |
| 4168 | * @param string $taxonomy Taxonomy name. |